Cryptosporidiosis and Blastocystosis in Renal Transplant Recipients

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Abstract
Some intestinal parasitic infections are frequently seen in renal transplant recipients. Parasites such as Cryptosporidium spp. and Blastocystishominis are often asymptomatic or responsible for limited infections in normals, but may cause prolonged and heavy infections with gastrointestinal complaints, mainly diarrhea, in immunocompromised patients. Such infections can often not be detected by routine diagnostic procedures, but special concentration and staining methods are needed. We investigated 115 fecal specimens from 69 renal transplant recipients and 42 fecal specimens from 42 control cases. Of the 69 recipients, 27 (39.1%) had B. hominis and 13 (18.8%) had Cryptosporidium spp. in at least one fecal specimen. Prevalence of symptomatic Cryptosporidium infections was significantly higher in the renal transplant recipients, when compared with the control group (p < 0.05). Special parasitological procedures must be performed in immunocompromised patients with chronic gastrointestinal complaints. Disappearance of symptoms after antiparasitic drugs in some of 16 symptomatic patients are described, suggesting that these infections are more pathogenic in transplant recipients.

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